Is this a good shampoo for dandruff?

I have dandruff and flakes. My scalp gets dry and I can scratch out the flakes. How bad is it? And is this a good enough shampoo to deal with it? Please help.

I have dandruff and flakes. My scalp gets dry and I can scratch out the flakes. How bad is it? And is this a good enough shampoo to deal with it? Please help.